{"id":3906,"date":"2026-08-31T10:06:37","date_gmt":"2026-08-31T01:06:37","guid":{"rendered":"https:\/\/y42u.net\/tec001\/2026\/08\/31\/earth-mass-gm-gnss-orbit-field\/"},"modified":"2026-09-12T23:21:08","modified_gmt":"2026-09-12T14:21:08","slug":"earth-mass-gm-gnss-orbit-field","status":"publish","type":"post","link":"https:\/\/y42u.net\/tec001\/2026\/08\/31\/earth-mass-gm-gnss-orbit-field\/","title":{"rendered":"\u5730\u7403\u306e\u91cd\u3055\u306f\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\uff1f \u2014 5.97\u00d710\u00b2\u2074kg\u3068\u3044\u3046\u6570\u5b57\u306e\u7cbe\u5ea6\u304c\u610f\u5916\u3068\u60aa\u3044\u7406\u7531\u3068\u3001GNSS\u304c\u6bce\u79d2\u4f7f\u3063\u3066\u3044\u308b\u300cGM\u300d"},"content":{"rendered":"<style>img.autopost-single-image{width:30%;max-width:100%;height:auto;display:block;}@media (max-width: 768px){img.autopost-single-image{width:50%;}}<\/style>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/08\/gde-earth-mass-gm-gnss-orbit-field.jpeg\" alt=\"\u5730\u7403\u306e\u91cd\u3055\u306f\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\uff1f \u2014 5.97\u00d710\u00b2\u2074kg\u3068\u3044\u3046\u6570\u5b57\u306e\u7cbe\u5ea6\u304c\u610f\u5916\u3068\u60aa\u3044\u7406\u7531\u3068\u3001GNSS\u304c\u6bce\u79d2\u4f7f\u3063\u3066\u3044\u308b\u300cGM\u300d\"><\/p>\n<h1 id=\"5971024kggnssgm\">\u5730\u7403\u306e\u91cd\u3055\u306f\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\uff1f \u2014 5.97\u00d710\u00b2\u2074kg\u3068\u3044\u3046\u6570\u5b57\u306e\u7cbe\u5ea6\u304c\u610f\u5916\u3068\u60aa\u3044\u7406\u7531\u3068\u3001GNSS\u304c\u6bce\u79d2\u4f7f\u3063\u3066\u3044\u308b\u300cGM\u300d<\/h1>\n<p><strong>\u5730\u7403\u306f\u7d0460\u5793\u30c8\u30f3\u3067\u3059\u3002<\/strong><\/p>\n<p>\u73fe\u5834\u3067\u53d7\u4fe1\u6a5f\u306e\u753b\u9762\u306b\u300cFix\u300d\u304c\u51fa\u308b\u307e\u3067\u306e\u3042\u3044\u3060\u3001\u6a5f\u68b0\u306f\u4e0a\u7a7a\u306e\u885b\u661f\u304c\u3044\u307e\u3069\u3053\u306b\u3044\u308b\u304b\u3092\u8a08\u7b97\u3057\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u8ecc\u9053\u8a08\u7b97\u306b\u306f\u3001\u5730\u7403\u306e\u91cd\u3055\u304c\u5165\u3063\u3066\u304d\u307e\u3059\u3002\u3067\u306f\u3001\u305d\u306e\u91cd\u3055\u306f\u8ab0\u304c\u3069\u3046\u3084\u3063\u3066\u6e2c\u3063\u305f\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u7b54\u3048\u306f <strong>5.9722\u00d710\u00b2\u2074kg<\/strong>\u3001\u5929\u79e4\u3067\u306f\u306a\u304f\u300c\u843d\u3061\u65b9\u300d\u304b\u3089\u6c42\u3081\u305f\u5024\u3067\u3059\u3002\u305f\u3060\u3057\u2014\u2014\u3053\u306e\u6570\u5b57\u306f\u3001<strong>\u53d7\u4fe1\u6a5f\u304c\u5b9f\u969b\u306b\u4f7f\u3063\u3066\u3044\u308b\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n<hr \/>\n<h2 id=\"_1\">\u307e\u305a\u3001\u6570\u5b57\u305d\u306e\u3082\u306e<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u8868\u3057\u65b9<\/th>\n<th>\u5024<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30ad\u30ed\u30b0\u30e9\u30e0<\/td>\n<td>\u7d04 5.9722\u00d710\u00b2\u2074 kg<\/td>\n<\/tr>\n<tr>\n<td>\u30c8\u30f3<\/td>\n<td>\u7d04 5.97\u00d710\u00b2\u00b9 t<\/td>\n<\/tr>\n<tr>\n<td>\u65e5\u672c\u8a9e\u306e\u6570\u8a5e\u3067<\/td>\n<td>\u7d04 60\u5793\uff08\u304c\u3044\uff09\u30c8\u30f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5793\u306f\u4eac\uff08\u3051\u3044\uff09\u306e\u4e0a\u300110\u00b2\u2070 \u3067\u3059\u3002\u65e5\u5e38\u3067\u4f7f\u3046\u5358\u4f4d\u306b\u843d\u3068\u3059\u3068\u3001\u3082\u3046\u610f\u5473\u3092\u6301\u305f\u306a\u3044\u5927\u304d\u3055\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u3001\u3053\u306e4\u6841\u76ee\u306f<strong>\u8cc7\u6599\u306b\u3088\u3063\u3066\u9055\u3044\u307e\u3059<\/strong>\u3002CODATA 2006 \u306f 5.9722(6)\u00d710\u00b2\u2074 kg\u3001\u56fd\u969b\u6e2c\u5730\u5b66\u5354\u4f1a\uff08IAG\uff09\u7cfb\u306e\u5024\u306f 5.9737(3)\u00d710\u00b2\u2074 kg\u3001NASA \u306e\u60d1\u661f\u30d5\u30a1\u30af\u30c8\u30b7\u30fc\u30c8\u306f 5.9736\u00d710\u00b2\u2074 kg\u3002\u3069\u308c\u304b\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u304f\u3001<strong>\u3053\u306e\u6841\u3088\u308a\u4e0b\u306f\u3001\u305d\u3082\u305d\u3082\u6c7a\u307e\u3063\u3066\u3044\u306a\u3044<\/strong>\u3001\u3068\u3044\u3046\u306e\u304c\u6b63\u3057\u3044\u7406\u89e3\u3067\u3059\u3002<\/p>\n<p>\u7406\u7531\u306f\u6b21\u306e\u7bc0\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_2\">\u6e2c\u3063\u305f\u306e\u306f\u300c\u91cd\u3055\u300d\u3067\u306f\u306a\u304f\u300c\u5bc6\u5ea6\u300d\u3060\u3063\u305f<\/h2>\n<p>\u5730\u7403\u3092\u79e4\u306b\u8f09\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u3067\u306f\u6700\u521d\u306b\u6e2c\u3063\u305f\u4eba\u306f\u4f55\u3092\u3057\u305f\u306e\u304b\u3002<\/p>\n<p>1797\u5e74\u304b\u30891798\u5e74\u306b\u304b\u3051\u3066\u3001\u30a4\u30ae\u30ea\u30b9\u306e\u30d8\u30f3\u30ea\u30fc\u30fb\u30ad\u30e3\u30f4\u30a7\u30f3\u30c7\u30a3\u30c3\u30b7\u30e5\u304c\u884c\u3063\u305f\u306e\u304c\u6709\u540d\u306a\u5b9f\u9a13\u3067\u3059\u3002\u7d30\u3044\u91dd\u91d1\u3067\u3064\u308b\u3057\u305f\u68d2\u306e\u4e21\u7aef\u306b\u5c0f\u3055\u306a\u925b\u7403\u3092\u4ed8\u3051\u3001\u305d\u306e\u8107\u306b\u5927\u304d\u306a\u925b\u7403\u3092\u8fd1\u3065\u3051\u308b\u3002<strong>\u925b\u7403\u3069\u3046\u3057\u306e\u5f15\u529b\u3067\u91dd\u91d1\u304c\u306d\u3058\u308c\u308b\u89d2\u5ea6<\/strong>\u3092\u6e2c\u308b\u3002\u88c5\u7f6e\u305d\u306e\u3082\u306e\u306f1783\u5e74\u3054\u308d\u306b\u5929\u6587\u5b66\u8005\u30b8\u30e7\u30f3\u30fb\u30df\u30c3\u30c1\u30a7\u30eb\u304c\u8003\u6848\u3057\u305f\u306d\u3058\u308a\u5929\u79e4\u3067\u3057\u305f\u3002<\/p>\n<p>\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u3001<strong>\u30ad\u30e3\u30f4\u30a7\u30f3\u30c7\u30a3\u30c3\u30b7\u30e5\u304c\u6c42\u3081\u3088\u3046\u3068\u3057\u305f\u306e\u306f\u300c\u5730\u7403\u306e\u6bd4\u91cd\u300d\u3060\u3063\u305f<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u4e07\u6709\u5f15\u529b\u5b9a\u6570 <em>G<\/em> \u3082\u5730\u7403\u306e\u8cea\u91cf <em>M<\/em> \u3082\u3001\u5f53\u6642\u306e\u76ee\u6a19\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u5b9f\u9a13\u5ba4\u306e\u925b\u7403\u3069\u3046\u3057\u306e\u5f15\u529b\u3068\u3001\u5730\u7403\u304c\u7269\u3092\u843d\u3068\u3059\u529b\u3092\u6bd4\u3079\u308c\u3070\u3001\u5730\u7403\u304c\u6c34\u306e\u4f55\u500d\u306e\u5bc6\u5ea6\u304b\u304c\u51fa\u308b\u3002\u305d\u3053\u304b\u3089\u534a\u5f84\u3068\u4f53\u7a4d\u3092\u639b\u3051\u308c\u3070\u8cea\u91cf\u306b\u306a\u308b\u2014\u2014\u3068\u3044\u3046\u9053\u7b4b\u3067\u3059\u3002<\/p>\n<p>\u300c\u4e07\u6709\u5f15\u529b\u5b9a\u6570\u304c\u6c42\u3081\u3089\u308c\u308b\u300d\u3068\u6c17\u3065\u3044\u305f\u306e\u306f\u3001\u5f8c\u5e74\u306e\u79d1\u5b66\u8005\u3067\u3057\u305f\u3002<\/p>\n<hr \/>\n<h2 id=\"_3\">\u306a\u305c\u3001\u3044\u307e\u3067\u3082\u5730\u7403\u306e\u8cea\u91cf\u306f\u7cbe\u5ea6\u304c\u60aa\u3044\u306e\u304b<\/h2>\n<p>\u73fe\u4ee3\u306e\u6e2c\u308a\u65b9\u306f\u3001\u30ad\u30e3\u30f4\u30a7\u30f3\u30c7\u30a3\u30c3\u30b7\u30e5\u306e\u5ef6\u9577\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4eba\u5de5\u885b\u661f\u304c\u5730\u7403\u306e\u307e\u308f\u308a\u3092\u3069\u3046\u56de\u308b\u304b\u3092\u898b\u3066\u3001<strong>GM<\/strong>\uff08\u5730\u5fc3\u91cd\u529b\u5b9a\u6570\u3001<em>G<\/em> \u00d7 \u5730\u7403\u8cea\u91cf\uff09\u3092\u307e\u3068\u3081\u30661\u3064\u306e\u91cf\u3068\u3057\u3066\u6c42\u3081\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u8cea\u91cf\u3092\u51fa\u3057\u305f\u3051\u308c\u3070\u3001\u3053\u3046\u5272\u308a\u307e\u3059\u3002<\/p>\n<pre><code>M = GM \u00f7 G\n<\/code><\/pre>\n<p>\u554f\u984c\u306f\u53f3\u8fba\u306e\u5206\u6bcd\u3067\u3059\u3002\u4e07\u6709\u5f15\u529b\u5b9a\u6570 <em>G<\/em> \u306f\u3001CODATA 2022 \u306e\u63a8\u5968\u5024\u3067 <strong>6.67430(15)\u00d710\u207b\u00b9\u00b9 m\u00b3kg\u207b\u00b9s\u207b\u00b2<\/strong>\u3001\u76f8\u5bfe\u6a19\u6e96\u4e0d\u78ba\u304b\u3055\u306f <strong>22 ppm\uff082.2\u00d710\u207b\u2075\uff09<\/strong>\u3002\u7269\u7406\u5b9a\u6570\u306e\u306a\u304b\u3067\u3082\u98db\u3073\u629c\u3051\u3066\u7cbe\u5ea6\u304c\u60aa\u3044\u90e8\u985e\u3067\u3059\u3002\u5b9f\u9a13\u5ba4\u30b9\u30b1\u30fc\u30eb\u306e\u5f15\u529b\u306f\u3001\u3042\u307e\u308a\u306b\u5f31\u3044\u3002<\/p>\n<p>\u4e00\u65b9\u306e GM \u306f\u3001\u885b\u661f\u306e\u904b\u52d5\u304b\u3089\u6841\u9055\u3044\u306b\u9ad8\u3044\u7cbe\u5ea6\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u2014\u2014<\/p>\n<blockquote><p>\n<strong>GM \u306f\u7cbe\u5bc6\u306b\u5206\u304b\u3063\u3066\u3044\u308b\u3002G \u306f\u7c97\u3044\u3002\u3060\u304b\u3089\u3001\u305d\u306e\u5272\u308a\u7b97\u3067\u51fa\u3066\u304f\u308b\u8cea\u91cf M \u3082\u7c97\u304f\u306a\u308b\u3002<\/strong>\n<\/p><\/blockquote>\n<p>\u5730\u7403\u306e\u8cea\u91cf\u304c5\u6841\u76ee\u3067\u63fa\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u5730\u7403\u306e\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u306f\u306a\u304f\u3001<strong>\u5b9f\u9a13\u5ba4\u306e <em>G<\/em> \u304c\u8db3\u3092\u5f15\u3063\u5f35\u3063\u3066\u3044\u308b\u304b\u3089<\/strong>\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"gnss-gm\">GNSS\u304c\u4f7f\u3063\u3066\u3044\u308b\u306e\u306f\u3001\u8cea\u91cf\u3067\u306f\u306a\u304f GM<\/h2>\n<p>\u3053\u3053\u304c\u73fe\u5834\u3068\u5730\u7d9a\u304d\u306b\u306a\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u885b\u661f\u306e\u8ecc\u9053\u3092\u8a08\u7b97\u3059\u308b\u5f0f\u306b\u51fa\u3066\u304f\u308b\u306e\u306f\u3001<em>G<\/em> \u3068 <em>M<\/em> \u304c\u5225\u3005\u306b\u3067\u306f\u306a\u304f\u3001<strong>\u5fc5\u305a GM \u3068\u3044\u3046\u7a4d\u306e\u5f62<\/strong>\u3067\u3059\u3002\u30b1\u30d7\u30e9\u30fc\u904b\u52d5\u3067\u3082\u6442\u52d5\u8a08\u7b97\u3067\u3082\u540c\u3058\u3002\u3057\u305f\u304c\u3063\u3066\u53d7\u4fe1\u6a5f\u5074\u306f\u3001\u5730\u7403\u304c\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\u304b\u3092\u77e5\u308b\u5fc5\u8981\u304c\u307e\u3063\u305f\u304f\u3042\u308a\u307e\u305b\u3093\u3002<strong>GM \u3068\u3044\u30461\u3064\u306e\u6570\u3055\u3048\u3042\u308c\u3070\u3044\u3044\u3002<\/strong><\/p>\n<p>\u305d\u306e GM \u306f\u3001\u6e2c\u5730\u7cfb\u306e\u5b9a\u7fa9\u305d\u306e\u3082\u306e\u306b\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7cfb<\/th>\n<th>GM \u306e\u5024\uff08m\u00b3\/s\u00b2\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>GRS80\uff08\u5b9a\u7fa9\u5024\uff09<\/td>\n<td>3 986 005 \u00d7 10\u2078<\/td>\n<\/tr>\n<tr>\n<td>WGS84<\/td>\n<td>3.986004418 \u00d7 10\u00b9\u2074<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5dee\u306f 5.82\u00d710\u2077 m\u00b3\/s\u00b2\u3001\u76f8\u5bfe\u3067\u7d04 1.5\u00d710\u207b\u2077 \u3067\u3059\u3002\u6841\u3067\u898b\u308c\u3070\u3054\u304f\u308f\u305a\u304b\u3067\u3059\u304c\u3001<strong>GRS80 \u3068 WGS84 \u306f\u300c\u540c\u3058\u3082\u306e\u300d\u3067\u306f\u306a\u3044<\/strong>\u3053\u3068\u306e\u3001\u3082\u3063\u3068\u3082\u5206\u304b\u308a\u3084\u3059\u3044\u73fe\u308c\u306e1\u3064\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/06\/qzss-clas-7sat-rtk-2026.jpg\" alt=\"\u307f\u3061\u3073\u304d\u306e\u885b\u661f\u914d\u7f6e\u3002\u8ecc\u9053\u306e\u8a08\u7b97\u306b\u306fGM\u304c\u4f7f\u308f\u308c\u308b\"><\/p>\n<hr \/>\n<h2 id=\"grs80\">GRS80\u306f\u300c\u5f62\u300d\u3067\u306f\u306a\u304f\u300c\u91cd\u529b\u5834\u300d\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b<\/h2>\n<p>\u3082\u3046\u4e00\u6b69\u3060\u3051\u8e0f\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<p>GRS80 \u3068\u3044\u3046\u8a00\u8449\u3092\u3001\u591a\u304f\u306e\u4eba\u306f\u300c\u9577\u534a\u5f84 6378137m\u3001\u6241\u5e73\u7387 1\/298.257222101 \u306e\u6955\u5186\u4f53\u300d\u3068\u3057\u3066\u899a\u3048\u3066\u3044\u307e\u3059\u3002\u3068\u3053\u308d\u304c GRS80 \u306e<strong>\u5b9a\u7fa9\u5024\u306f4\u3064<\/strong>\u3067\u3001\u305d\u306e\u3046\u30613\u3064\u306f\u7269\u7406\u5b9a\u6570\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5b9a\u7fa9\u5024<\/th>\n<th>\u8a18\u53f7<\/th>\n<th>\u5024<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9577\u534a\u5f84\uff08\u5e7e\u4f55\u5b66\u5b9a\u6570\uff09<\/td>\n<td>a<\/td>\n<td>6 378 137 m<\/td>\n<\/tr>\n<tr>\n<td>\u5730\u5fc3\u91cd\u529b\u5b9a\u6570\uff08\u5927\u6c17\u3092\u542b\u3080\uff09<\/td>\n<td>GM<\/td>\n<td>3 986 005 \u00d7 10\u2078 m\u00b3\/s\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\u529b\u5b66\u7684\u5f62\u72b6\u4fc2\u6570<\/td>\n<td>J\u2082<\/td>\n<td>108 263 \u00d7 10\u207b\u2078<\/td>\n<\/tr>\n<tr>\n<td>\u81ea\u8ee2\u89d2\u901f\u5ea6<\/td>\n<td>\u03c9<\/td>\n<td>7 292 115 \u00d7 10\u207b\u00b9\u00b9 s\u207b\u00b9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6241\u5e73\u7387\u306f<strong>\u3053\u306e4\u3064\u304b\u3089\u5c0e\u3044\u305f\u5024<\/strong>\u3067\u3001\u5b9a\u7fa9\u305d\u306e\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff08\u5c0e\u51fa\u5024\u306e\u9006\u6570\u3092\u5c0f\u65709\u6841\u306b\u4e38\u3081\u3066\u5b9a\u7fa9\u5024\u6271\u3044\u306b\u3057\u3066\u3088\u3044\u3001\u3068\u3044\u3046\u66f8\u304d\u65b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\uff09\u3002<\/p>\n<p>\u3064\u307e\u308a GRS80 \u306f\u3001<strong>\u300c\u5730\u7403\u306f\u3053\u3046\u3044\u3046\u5f62\u3092\u3057\u3066\u3044\u308b\u300d\u3067\u306f\u306a\u304f\u300c\u5730\u7403\u306f\u3053\u3046\u3044\u3046\u91cd\u529b\u5834\u3092\u6301\u3063\u3066\u3001\u3053\u306e\u901f\u3055\u3067\u56de\u3063\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u5b9a\u7fa9<\/strong>\u3067\u3059\u3002\u6955\u5186\u4f53\u306e\u6f70\u308c\u5177\u5408\u306f\u3001\u305d\u306e\u5e30\u7d50\u3068\u3057\u3066\u51fa\u3066\u304f\u308b\u3002\u5730\u7403\u304c\u6f70\u308c\u3066\u3044\u308b\u306e\u306f\u81ea\u8ee2\u3057\u3066\u3044\u308b\u304b\u3089\u3060\u3001\u3068\u3044\u3046\u7269\u7406\u304c\u3001\u305d\u306e\u307e\u307e\u5b9a\u7fa9\u306e\u9806\u5e8f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>J\u2082\uff08\u5730\u7403\u306e\u6f70\u308c\u5177\u5408\u304c\u91cd\u529b\u5834\u306b\u51fa\u3066\u304f\u308b\u9805\uff09\u306f\u3001\u885b\u661f\u8ecc\u9053\u3092\u6bce\u65e5\u308f\u305a\u304b\u306b\u56de\u3057\u307e\u3059\u3002\u307f\u3061\u3073\u304d\u306e\u6e96\u5929\u9802\u8ecc\u9053\u304c\u9577\u671f\u9593\u304b\u305f\u3061\u3092\u4fdd\u3066\u308b\u306e\u3082\u3001\u3053\u306e\u9805\u3092\u7e54\u308a\u8fbc\u3093\u3060\u8a2d\u8a08\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_4\">\u3067\u306f\u3001\u73fe\u5834\u3067\u4f55\u304c\u5909\u308f\u308b\u306e\u304b<\/h2>\n<p>\u6b63\u76f4\u306b\u66f8\u304f\u3068\u3001<strong>\u65e5\u3005\u306e\u89b3\u6e2c\u3067 GM \u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong> \u88dc\u6b63\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u3001Fix \u3092\u5f85\u3061\u3001\u70b9\u3092\u6253\u3064\u3002\u305d\u306e\u9593\u306b GM \u306f\u4e00\u5ea6\u3082\u753b\u9762\u306b\u51fa\u3066\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u308c\u3067\u3082\u3001\u3053\u306e\u6570\u5b57\u306e\u6027\u683c\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u5207\u308a\u5206\u3051\u304c1\u3064\u5897\u3048\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u8ecc\u9053\u306e\u60c5\u5831\u306f\u3001\u53d7\u4fe1\u6a5f\u304c\u30bc\u30ed\u304b\u3089\u8a08\u7b97\u3057\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u304f\u300c\u4e0e\u3048\u3089\u308c\u3066\u3044\u308b\u300d<\/strong>\u3002\u653e\u9001\u66a6\u30fb\u7cbe\u5bc6\u66a6\u3068\u3057\u3066\u964d\u3063\u3066\u304f\u308b\u3082\u306e\u3092\u4f7f\u3046\u3002\u3060\u304b\u3089\u8ecc\u9053\u5074\u306e\u8aa4\u5dee\u306f\u3001\u3053\u3061\u3089\u306e\u6a5f\u6750\u3084\u30a2\u30f3\u30c6\u30ca\u8a2d\u7f6e\u3067\u306f\u6539\u5584\u3067\u304d\u306a\u3044<\/li>\n<li><strong>GM \u3084 J\u2082 \u306f\u6e2c\u5730\u7cfb\u306e\u5b9a\u7fa9\u306b\u56fa\u5b9a\u3055\u308c\u305f\u5024<\/strong>\u3067\u3001\u65e5\u3005\u66f4\u65b0\u3055\u308c\u308b\u3082\u306e\u3067\u306f\u306a\u3044\u3002\u65e5\u3054\u3068\u306b\u5909\u308f\u308b\u306e\u306f\u885b\u661f\u306e\u4f4d\u7f6e\u3068\u5927\u6c17\u30fb\u96fb\u96e2\u570f\u306e\u72b6\u614b\u306e\u307b\u3046<\/li>\n<li><strong>\u300cGRS80 \u3068 WGS84 \u306e\u9055\u3044\u300d\u306f\u3001\u6955\u5186\u4f53\u306e\u5f62\u306e\u8a71\u3060\u3051\u3067\u306f\u306a\u3044<\/strong>\u3002GM \u306e\u3088\u3046\u306a\u7269\u7406\u5b9a\u6570\u307e\u3067\u542b\u3081\u3066\u3001\u308f\u305a\u304b\u306b\u9055\u30462\u3064\u306e\u4f53\u7cfb\u3060\u3068\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u30bd\u30d5\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u8868\u3092\u8aad\u3080\u3068\u304d\u306b\u8ff7\u308f\u306a\u3044<\/li>\n<\/ul>\n<p>\u73fe\u5834\u3067\u52b9\u304f\u306e\u306f\u3001\u3053\u306e3\u3064\u76ee\u3067\u3059\u3002\u8a2d\u5b9a\u753b\u9762\u306b GRS80 \u3068 WGS84 \u304c\u4e26\u3093\u3067\u3044\u3066\u3001\u3069\u3061\u3089\u3067\u3082\u5927\u5dee\u306a\u3044\u2014\u2014\u3068\u3044\u3046\u611f\u899a\u306f\u6b63\u3057\u3044\u306e\u3067\u3059\u304c\u3001<strong>\u300c\u306a\u305c\u5927\u5dee\u306a\u3044\u306e\u304b\u300d\u3092\u8aac\u660e\u3067\u304d\u308b\u304b\u3069\u3046\u304b<\/strong>\u3067\u3001\u30c8\u30e9\u30d6\u30eb\u6642\u306e\u5207\u308a\u5206\u3051\u901f\u5ea6\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_5\">\u307e\u3068\u3081<\/h2>\n<ul>\n<li>\u5730\u7403\u306e\u8cea\u91cf\u306f\u7d04 5.9722\u00d710\u00b2\u2074 kg\uff08\u7d0460\u5793\u30c8\u30f3\uff09\u3002\u305f\u3060\u3057<strong>4\u6841\u76ee\u306f\u8cc7\u6599\u306b\u3088\u3063\u3066\u9055\u3046<\/strong><\/li>\n<li>\u6700\u521d\u306b\u6e2c\u3063\u305f\u30ad\u30e3\u30f4\u30a7\u30f3\u30c7\u30a3\u30c3\u30b7\u30e5\uff081797\u301c1798\u5e74\uff09\u306e\u76ee\u7684\u306f\u3001\u8cea\u91cf\u3067\u3082\u4e07\u6709\u5f15\u529b\u5b9a\u6570\u3067\u3082\u306a\u304f<strong>\u5730\u7403\u306e\u6bd4\u91cd<\/strong>\u3060\u3063\u305f<\/li>\n<li>\u3044\u307e\u7cbe\u5bc6\u306b\u5206\u304b\u3063\u3066\u3044\u308b\u306e\u306f\u8cea\u91cf\u3067\u306f\u306a\u304f <strong>GM<\/strong>\uff08G \u00d7 \u8cea\u91cf\uff09\u3002\u8cea\u91cf\u306f GM \u3092 <em>G<\/em> \u3067\u5272\u3063\u3066\u51fa\u3059\u305f\u3081\u3001<strong>G \u306e 22 ppm \u3068\u3044\u3046\u7c97\u3055\u304c\u305d\u306e\u307e\u307e\u4e57\u308b<\/strong><\/li>\n<li>GNSS \u306e\u8ecc\u9053\u8a08\u7b97\u306b\u5fc5\u8981\u306a\u306e\u306f GM \u3060\u3051\u3002<strong>\u53d7\u4fe1\u6a5f\u306f\u5730\u7403\u304c\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\u304b\u3092\u77e5\u3089\u306a\u304f\u3066\u3044\u3044<\/strong><\/li>\n<li>GRS80 \u306e\u5b9a\u7fa9\u50244\u3064\u306e\u3046\u30613\u3064\u306f\u7269\u7406\u5b9a\u6570\uff08GM\u30fbJ\u2082\u30fb\u03c9\uff09\u3002<strong>\u6955\u5186\u4f53\u306f\u5f62\u3067\u306f\u306a\u304f\u91cd\u529b\u5834\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b<\/strong><\/li>\n<\/ul>\n<p>\u73fe\u5834\u306e\u5ea7\u6a19\u304c\u300c\u3069\u306e\u4f53\u7cfb\u306e\u5024\u306a\u306e\u304b\u300d\u3092\u5358\u70b9\u3067\u7a81\u304d\u5408\u308f\u305b\u305f\u3044\u3068\u304d\u306f\u3001\u5909\u63db\u5074\u3067\u78ba\u304b\u3081\u308b\u306e\u304c\u65e9\u3044\u65b9\u6cd5\u3067\u3059\u3002GeoConverter Pro \u306f\u65e7\u65e5\u672c\u6e2c\u5730\u7cfb\u30fbJGD2000\/2011\/2024 \u3068\u5e73\u9762\u76f4\u89d219\u7cfb\u306e\u76f8\u4e92\u5909\u63db\u3092\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u884c\u3048\u307e\u3059\u3002<\/p>\n<p>https:\/\/apps.apple.com\/jp\/app\/geoconverter-pro\/id6761740960<\/p>\n<hr \/>\n<blockquote><p>\n\u672c\u8a18\u4e8b\u306e\u7269\u7406\u5b9a\u6570\u306f<strong>2026\u5e748\u6708\u6642\u70b9<\/strong>\u306e\u516c\u8868\u5024\u3067\u3059\u3002CODATA \u306e\u63a8\u5968\u5024\u306f\u6539\u8a02\u3055\u308c\u308b\u305f\u3081\u3001\u7cbe\u5bc6\u8a08\u7b97\u306b\u4f7f\u3046\u969b\u306f\u6700\u65b0\u7248\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\n<\/p><\/blockquote>\n<h3 id=\"_6\">\u51fa\u5178<\/h3>\n<ul>\n<li>GRS80\uff08\u5b9a\u7fa9\u50244\u3064\u30fb\u5c0e\u51fa\u5024\uff09 https:\/\/ja.wikipedia.org\/wiki\/GRS80<\/li>\n<li>\u56fd\u571f\u5730\u7406\u9662\u300cGRS80\u6955\u5186\u4f53\u3068\u306f\u4f55\u304b\u3002\u300d\uff08\u4e16\u754c\u6e2c\u5730\u7cfb\u79fb\u884c\u306b\u95a2\u3059\u308b\u8cea\u554f\u96c6\uff09 https:\/\/www.gsi.go.jp\/LAW\/G2000-g2000faq-1.htm<\/li>\n<li>CODATA Recommended Values of the Fundamental Physical Constants: 2022 https:\/\/physics.nist.gov\/cuu\/pdf\/wall_2022.pdf<\/li>\n<li>\u30ad\u30e3\u30f4\u30a7\u30f3\u30c7\u30a3\u30c3\u30b7\u30e5\u306e\u5b9f\u9a13 https:\/\/ja.wikipedia.org\/wiki\/%E3%82%AD%E3%83%A3%E3%83%B4%E3%82%A7%E3%83%B3%E3%83%87%E3%82%A3%E3%83%83%E3%82%B7%E3%83%A5%E3%81%AE%E5%AE%9F%E9%A8%93<\/li>\n<li>\u4e07\u6709\u5f15\u529b\u5b9a\u6570 https:\/\/ja.wikipedia.org\/wiki\/%E4%B8%87%E6%9C%89%E5%BC%95%E5%8A%9B%E5%AE%9A%E6%95%B0<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"_7\">\u6b21\u306b\u78ba\u8a8d\u3059\u308b<\/h2>\n<ul>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/08\/24\/multi-gnss-constellations-rtk-field\/\">GPS\u4ee5\u5916\u306e\u885b\u661f\u3092\u6df7\u305c\u308b\u3068\u57fa\u6e96\u5ea7\u6a19\u7cfb\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/a> \u2014 \u30b7\u30b9\u30c6\u30e0\u3054\u3068\u306b\u9055\u3046\u57fa\u6e96\u5ea7\u6a19\u7cfb\u304c\u3001RTK\u306e\u73fe\u5834\u3067\u3069\u3046\u51fa\u308b\u304b\u306e\u56de\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/06\/24\/f51-solution-itrf2020-rtk-field\/\">ITRF2020\u306eF5\u89e3\u3068\u5143\u671f\u306e\u95a2\u4fc2\u3092\u73fe\u5834\u76ee\u7dda\u3067\u78ba\u8a8d\u3059\u308b<\/a> \u2014 \u5b9a\u7fa9\u5024\u3067\u306f\u306a\u304f\u300c\u5b9f\u969b\u306b\u914d\u3089\u308c\u3066\u3044\u308b\u5ea7\u6a19\u300d\u306e\u5074\u306e\u8a71\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/08\/11\/qzss7-launch-success-7sat-field\/\">\u307f\u3061\u3073\u304d7\u53f7\u6a5f\u306e\u6253\u3061\u4e0a\u3052\u6210\u529f\u30677\u6a5f\u4f53\u5236\u306b\u306a\u3063\u305f\u7d4c\u7def\u3092\u78ba\u8a8d\u3059\u308b<\/a> \u2014 \u672c\u8a18\u4e8b\u306e\u8ecc\u9053\u306e\u8a71\u304c\u3001\u5b9f\u6a5f\u3068\u3057\u3066\u4f55\u6a5f\u306b\u306a\u3063\u305f\u304b\u306e\u8a18\u9332\u3067\u3059<\/li>\n<li><a href=\"https:\/\/gmp.y42u.net\/2026\/08\/11\/qzss-orbit-types-learning\/\">\u307f\u3061\u3073\u304d\u306e3\u7a2e\u985e\u306e\u8ecc\u9053\u306e\u9055\u3044\u3092\u56f3\u3067\u78ba\u8a8d\u3059\u308b\uff08GeoPrism JP\uff09<\/a> \u2014 \u672c\u8a18\u4e8b\u306e J\u2082 \u304c\u52b9\u3044\u3066\u304f\u308b\u3001\u6e96\u5929\u9802\u8ecc\u9053\u306e\u304b\u305f\u3061\u3092\u4e00\u822c\u5411\u3051\u306b\u56f3\u89e3\u3057\u305f\u56de\u3067\u3059<\/li>\n<li>\u66f8\u7c4d\u3067\u307e\u3068\u3081\u3066\u5b66\u3076: <a href=\"https:\/\/www.amazon.co.jp\/dp\/B0HF4SJC1L\">\u300e\u65e5\u672c\u306e\u6e2c\u5730\u7cfbQ&amp;A\u300f\u7b2c10\u7ae0\u300cGPS\u3068\u307f\u3061\u3073\u304d\u306e\u3057\u304f\u307f\u300d<\/a>\uff08Kindle Unlimited\u5bfe\u5fdc\uff09<\/li>\n<\/ul>\n<hr \/>\n<blockquote><p>\n<strong>\u5165\u9580\u304b\u3089\u901a\u3057\u3067\u8aad\u3080\u306a\u3089<\/strong>: <a href=\"https:\/\/www.amazon.co.jp\/dp\/B0H971W8WX\">\u300e\u65e5\u672c\u306e\u6e2c\u5730\u7cfb\u304c\u308f\u304b\u308b\u672c\u300f<\/a> \u2014 \u65e7\u65e5\u672c\u6e2c\u5730\u7cfb\u304b\u3089 JGD2024 \u307e\u3067\u3001\u5ea7\u6a19\u304c\u30ba\u30ec\u308b\u7406\u7531\u3068\u5b9f\u52d9\u3067\u306e\u6271\u3044\u30921\u518a\u306b\u307e\u3068\u3081\u307e\u3057\u305f\uff08Kindle Unlimited \u5bfe\u5fdc\uff09\n<\/p><\/blockquote>\n<hr \/>\n<blockquote><p>\n<strong>\u958b\u767a\u8005\u3088\u308a<\/strong>: \u30a2\u30d7\u30ea\u30fbKindle\u672c\u30fb\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u4e00\u89a7\u306f <a href=\"https:\/\/github.com\/amru195704\">GitHub: amru195704<\/a> \u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002\n<\/p><\/blockquote>\n<hr \/>\n<blockquote><p>\n<strong>\u304a\u9858\u3044<\/strong><br \/>\n\u672c\u8a18\u4e8b\u306e\u60c5\u5831\u306f\u53c2\u8003\u76ee\u7684\u3067\u63b2\u8f09\u3057\u3066\u304a\u308a\u3001\u6b63\u78ba\u6027\u30fb\u5b8c\u5168\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aa4\u8a18\u30fb\u4e0d\u6b63\u78ba\u306a\u60c5\u5831\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u30b3\u30e1\u30f3\u30c8\u6b04\u3088\u308a\u3054\u6307\u6458\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u78ba\u8a8d\u306e\u3046\u3048\u4fee\u6b63\u3044\u305f\u3057\u307e\u3059\u3002\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u5730\u7403\u306e\u91cd\u3055\u306f\u4f55\u30ad\u30ed\u30b0\u30e9\u30e0\uff1f \u2014 5.97\u00d710\u00b2\u2074kg\u3068\u3044\u3046\u6570\u5b57\u306e\u7cbe\u5ea6\u304c\u610f\u5916\u3068\u60aa\u3044\u7406\u7531\u3068\u3001GNSS\u304c\u6bce\u79d2\u4f7f\u3063\u3066\u3044\u308b\u300cGM\u300d \u5730\u7403\u306f\u7d0460\u5793\u30c8\u30f3\u3067\u3059\u3002 \u73fe\u5834\u3067\u53d7\u4fe1\u6a5f\u306e\u753b\u9762\u306b\u300cFix\u300d\u304c\u51fa\u308b\u307e\u3067\u306e\u3042\u3044\u3060\u3001\u6a5f\u68b0\u306f\u4e0a\u7a7a\u306e\u885b\u661f\u304c\u3044 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3905,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[453,16,454,140,457,456,452,451,458,455],"class_list":["post-3906","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-gm","tag-gnss","tag-grs80","tag-wgs84","tag-457","tag-456","tag-452","tag-451","tag-458","tag-455"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/08\/gde-earth-mass-gm-gnss-orbit-field.jpeg","_links":{"self":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/3906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/comments?post=3906"}],"version-history":[{"count":2,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/3906\/revisions"}],"predecessor-version":[{"id":3988,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/3906\/revisions\/3988"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media\/3905"}],"wp:attachment":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media?parent=3906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/categories?post=3906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/tags?post=3906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}